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DATE: 01/26/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:24:36                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              206/San Saba                                              VRSN:      W
                                                        206-902/Richland Springs ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                  988,404        1.0981               900,104               6               73         .024915603
      2           A                  985,691        1.0579               931,743               6               43         .001497656
      3           A                  953,472        1.0410               915,919               6               26         .014728237
      4           A                  967,007        0.9032             1,070,645               5               15         .009780524
      5           D3              17,985,680        0.9842            18,274,416              20            2,265         .009058257
  RANDOM TOTALS:                  21,880,254                          22,092,827              43            2,422
  CATG J  EXCEPTION VALUES:        1,830,720                           1,864,076
  CATG D1 EXCEPTION VALUES:       16,032,500                          17,414,879
 TOTAL TEST VALUES (4):           39,743,474                          41,371,782
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            2,068,589
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             39,303,193 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              39,743,474 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             43,440,371 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              40,133,170 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES